pan/bi: Add bi_max_temp helper

Instead of trying to reindex all the times, just be okay with consistent
but sparse indices, then figuring out the max index is easy enough.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4150>
1 file changed